720688640

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:468

約数の個数: 160

約数和(自身を含む): 1996372224

約数和(自身を除く): 1275683584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 131, 140, 160, 224, 256, 262, 280, 307, 320, 448, 512, 524, 560, 614, 640, 655, 896, 917, 1048, 1120, 1228, 1280, 1310, 1535, 1792, 1834, 2096, 2149, 2240, 2456, 2560, 2620, 3070, 3584, 3668, 4192, 4298, 4480, 4585, 4912, 5240, 6140, 7336, 8384, 8596, 8960, 9170, 9824, 10480, 10745, 12280, 14672, 16768, 17192, 17920, 18340, 19648, 20960, 21490, 24560, 29344, 33536, 34384, 36680, 39296, 40217, 41920, 42980, 49120, 58688, 67072, 68768, 73360, 78592, 80434, 83840, 85960, 98240, 117376, 137536, 146720, 157184, 160868, 167680, 171920, 196480, 201085, 234752, 275072, 281519, 293440, 321736, 335360, 343840, 392960, 402170, 469504, 550144, 563038, 586880, 643472, 687680, 785920, 804340, 1100288, 1126076, 1173760, 1286944, 1375360, 1407595, 1608680, 2252152, 2347520, 2573888, 2750720, 2815190, 3217360, 4504304, 5147776, 5501440, 5630380, 6434720, 9008608, 10295552, 11260760, 12869440, 18017216, 20591104, 22521520, 25738880, 36034432, 45043040, 51477760, 72068864, 90086080, 102955520, 144137728, 180172160, 360344320, 720688640]

約数ペア:

[(1, 720688640), (2, 360344320), (4, 180172160), (5, 144137728), (7, 102955520), (8, 90086080), (10, 72068864), (14, 51477760), (16, 45043040), (20, 36034432), (28, 25738880), (32, 22521520), (35, 20591104), (40, 18017216), (56, 12869440), (64, 11260760), (70, 10295552), (80, 9008608), (112, 6434720), (128, 5630380), (131, 5501440), (140, 5147776), (160, 4504304), (224, 3217360), (256, 2815190), (262, 2750720), (280, 2573888), (307, 2347520), (320, 2252152), (448, 1608680), (512, 1407595), (524, 1375360), (560, 1286944), (614, 1173760), (640, 1126076), (655, 1100288), (896, 804340), (917, 785920), (1048, 687680), (1120, 643472), (1228, 586880), (1280, 563038), (1310, 550144), (1535, 469504), (1792, 402170), (1834, 392960), (2096, 343840), (2149, 335360), (2240, 321736), (2456, 293440), (2560, 281519), (2620, 275072), (3070, 234752), (3584, 201085), (3668, 196480), (4192, 171920), (4298, 167680), (4480, 160868), (4585, 157184), (4912, 146720), (5240, 137536), (6140, 117376), (7336, 98240), (8384, 85960), (8596, 83840), (8960, 80434), (9170, 78592), (9824, 73360), (10480, 68768), (10745, 67072), (12280, 58688), (14672, 49120), (16768, 42980), (17192, 41920), (17920, 40217), (18340, 39296), (19648, 36680), (20960, 34384), (21490, 33536), (24560, 29344)]